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5.7 ADJUSTING THE TELESCOPE CHAINS
The right way to adjust the chains is done by measuring the distance from the 2-telescopeear
to the end of the 1-telescope. Right distance is 5 - 10 mm (see the picture below). If the
distance is less than 5 - 10 mm, the telescope is adjusted out by tightening the chain tightener
on the boom and if needed loosening the lower tightener under boom. If the distance is more
than 5 - 10 mm the telescope is adjustedin by tightening the lower tightener and again if
needed by loosening the upper tightener.
Finally control the right tightness of the chains. The right tightness is controlled by placing the
boom in straight position with both of the telescope out driven and grapple nearly touching the
ground, after doing this the telescope is slightly pulled in (100 mm). When the telescopes has
been drawn in should upper chain “hang” about 10 - 20mm from the straight line (see in
picture). When needed adjust the chains into their right tightness and control the distance of
the 2-telescope ear from the 1-telescope.